Primitive Silverfish vs Common Bark Louse
Side-by-side species comparison
| Attribute | Primitive Silverfish | Common Bark Louse |
|---|---|---|
| Scientific Name | Tricholepidion gertschi | Graphopsocus cruciatus |
| Order | Zygentoma | Psocoptera |
| Family | Lepidotrichidae | Stenopsocidae |
| Size | 8-12 mm | 3-4 mm |
| Habitat | Forests | Woodlands |
| Diet | Wood Feeders | Wood Feeders |
| Regions | United States | Europe, North America |
| Conservation | Near Threatened | Least Concern |
Primitive Silverfish
The most primitive living silverfish, restricted to old-growth forests of northern California. It retains compound eyes and other ancestral features.
Did You Know?
It is considered a living fossil and the sole surviving member of its family.
Common Bark Louse
A winged bark louse with distinctive cross-shaped wing markings found on tree trunks across Europe. It feeds on algae and lichen on bark.
Did You Know?
Its cross-shaped wing pattern makes it one of the easiest bark lice to identify.